package com.ddx.common.util.rsa;

import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;

import java.security.Key;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.util.HashMap;
import java.util.Map;

/**
 * com.cdd.center.commom.cipher.rsa.CreateSecrteKey
 * Description 生成公钥私钥
 * Copyrigth(C),2017,lx86468@126.com.com
 * Date 2017/6/14
 *
 * @author lixiao on 2017/6/14.
 * @version 1.0
 */
public class CreateSecrteKey {
    public class Keys {

    }
    public static final String KEY_ALGORITHM = "RSA";
    //public static final String SIGNATURE_ALGORITHM = "MD5withRSA";
    private static final String PUBLIC_KEY = "bbcoinPubkey";
    private static final String PRIVATE_KEY = "bbcoinPrikey";

    //获得公钥
    public static String getPublicKey(Map<String, Object> keyMap) throws Exception {
        //获得map中的公钥对象 转为key对象
        Key key = (Key) keyMap.get(PUBLIC_KEY);
        //byte[] publicKey = key.getEncoded();
        //编码返回字符串
        return encryptBASE64(key.getEncoded());
    }

    //获得私钥
    public static String getPrivateKey(Map<String, Object> keyMap) throws Exception {
        //获得map中的私钥对象 转为key对象
        Key key = (Key) keyMap.get(PRIVATE_KEY);
        //byte[] privateKey = key.getEncoded();
        //编码返回字符串
        return encryptBASE64(key.getEncoded());
    }

    //解码返回byte
    public static byte[] decryptBASE64(String key) throws Exception {
        return (new BASE64Decoder()).decodeBuffer(key);
    }

    //编码返回字符串
    public static String encryptBASE64(byte[] key) throws Exception {
        return (new BASE64Encoder()).encodeBuffer(key);
    }

    //map对象中存放公私钥
    public static Map<String, Object> initKey() throws Exception {
        //获得对象 KeyPairGenerator 参数 RSA 1024个字节
        KeyPairGenerator keyPairGen = KeyPairGenerator.getInstance(KEY_ALGORITHM);
        keyPairGen.initialize(1024);
        //通过对象 KeyPairGenerator 获取对象KeyPair
        KeyPair keyPair = keyPairGen.generateKeyPair();

        //通过对象 KeyPair 获取RSA公私钥对象RSAPublicKey RSAPrivateKey
        RSAPublicKey publicKey = (RSAPublicKey) keyPair.getPublic();
        RSAPrivateKey privateKey = (RSAPrivateKey) keyPair.getPrivate();
        //公私钥对象存入map中
        Map<String, Object> keyMap = new HashMap<String, Object>(2);
        keyMap.put(PUBLIC_KEY, publicKey);
        keyMap.put(PRIVATE_KEY, privateKey);
        return keyMap;
    }

//    public static void main(String[] args) {
//        Map<String, Object> keyMap;
//        try {
//            keyMap = initKey();
//            String publicKey = getPublicKey(keyMap);
//            System.out.println("测试公钥"+publicKey);
//            String privateKey = getPrivateKey(keyMap);
//            System.out.println("测试私钥"+privateKey);
//        } catch (Exception e) {
//            e.printStackTrace();
//        }
//    }

//  public static void main(String[] args) throws Exception {
//        String str = "test123李筱";
//        String publickey="MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDXHZwtv5jcBaAlsGLIFFIanmlGhvPzI/3u8DO9FX7lqU84fZPWls0n+3wPIBqUcpin+dAyGGHkf5jGeykUwcDB6mGyfxLTopfT8fGP8Vt8oyeJ4tlnUHneXUDKm7WiUu7mPsTxMifj5PrN/m5om09cZDpAlXtYZbNM6rBEaBvLBwIDAQAB";
//        String privatekey = "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";
//        String encrypt = RSAUtils.encrypt(str, publickey);
//        System.out.println("加密后："+encrypt);
//        String decrypt = RSAUtils.decrypt(encrypt, privatekey);
//        System.out.println("解密后："+decrypt);
//    }
}